A depiction of the "long serpent" rocket launcher from the 11th century book
Wujing Zongyao. The holes in the frame are designed to keep the fire arrows separate.
This article gives a concise timeline of rocket and missile technology.
11th century-13th century
Robert Anderson suggests using metal for rocket casing
- In Europe, around 1250 both Roger Bacon and the Liber Ignium gave instructions for constructing devices that appear to be rockets. [1]